How to use Hilt in an Android app?

Hilt is a dependency injection library for Android that simplifies the process of using Dagger for dependency injection in Android apps. Below you'll find a brief guide on how to use Hilt in your Android application with a practical example.

Getting Started with Hilt

1. Add Hilt dependencies to your project:

dependencies {
            implementation "com.google.dagger:hilt-android:"
            kapt "com.google.dagger:hilt-compiler:"
        }

2. Apply the Hilt Gradle plugin in your build.gradle file:

plugins {
            id 'dagger.hilt.android.plugin'
        }

3. Annotate your application class with @HiltAndroidApp:

@HiltAndroidApp
        class MyApplication : Application() {
        }

4. Create a module to provide dependencies:

@Module
        @InstallIn(SingletonComponent::class)
        object NetworkModule {
            @Provides
            @Singleton
            fun provideApiService(): ApiService {
                return Retrofit.Builder()
                    .baseUrl("https://api.example.com")
                    .build()
                    .create(ApiService::class.java)
            }
        }

5. Inject the dependencies in your activity or fragment:

@AndroidEntryPoint
        class MainActivity : AppCompatActivity() {
            @Inject lateinit var apiService: ApiService
            
            override fun onCreate(savedInstanceState: Bundle?) {
                super.onCreate(savedInstanceState)
                setContentView(R.layout.activity_main)
                // Use apiService here
            }
        }